diff --git a/tests/ui/source-enum-not-error.stderr b/tests/ui/source-enum-not-error.stderr
index 742201a..da10c6e 100644
--- a/tests/ui/source-enum-not-error.stderr
+++ b/tests/ui/source-enum-not-error.stderr
@@ -1,22 +1,22 @@
 error[E0599]: the method `as_dyn_error` exists for reference `&NotError`, but its trait bounds were not satisfied
-   --> tests/ui/source-enum-not-error.rs:10:9
-    |
-4   | pub struct NotError;
-    | -------------------
-    | |
-    | doesn't satisfy `NotError: AsDynError`
-    | doesn't satisfy `NotError: std::error::Error`
+  --> tests/ui/source-enum-not-error.rs:10:9
+   |
+4  | pub struct NotError;
+   | -------------------
+   | |
+   | doesn't satisfy `NotError: AsDynError`
+   | doesn't satisfy `NotError: std::error::Error`
 ...
-10  |         source: NotError,
-    |         ^^^^^^ method cannot be called on `&NotError` due to unsatisfied trait bounds
-    |
-    = note: the following trait bounds were not satisfied:
-            `NotError: std::error::Error`
-            which is required by `NotError: AsDynError`
-            `&NotError: std::error::Error`
-            which is required by `&NotError: AsDynError`
+10 |         source: NotError,
+   |         ^^^^^^ method cannot be called on `&NotError` due to unsatisfied trait bounds
+   |
+   = note: the following trait bounds were not satisfied:
+           `NotError: std::error::Error`
+           which is required by `NotError: AsDynError`
+           `&NotError: std::error::Error`
+           which is required by `&NotError: AsDynError`
 note: the following trait must be implemented
-   --> $RUST/std/src/error.rs
-    |
-    | pub trait Error: Debug + Display {
-    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  --> $RUST/core/src/error.rs
+   |
+   | pub trait Error: Debug + Display {
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/source-struct-not-error.stderr b/tests/ui/source-struct-not-error.stderr
index 6fa85b0..cc0e67a 100644
--- a/tests/ui/source-struct-not-error.stderr
+++ b/tests/ui/source-struct-not-error.stderr
@@ -1,21 +1,21 @@
 error[E0599]: the method `as_dyn_error` exists for struct `NotError`, but its trait bounds were not satisfied
-   --> tests/ui/source-struct-not-error.rs:9:5
-    |
-4   | struct NotError;
-    | ---------------
-    | |
-    | method `as_dyn_error` not found for this struct
-    | doesn't satisfy `NotError: AsDynError`
-    | doesn't satisfy `NotError: std::error::Error`
+  --> tests/ui/source-struct-not-error.rs:9:5
+   |
+4  | struct NotError;
+   | ---------------
+   | |
+   | method `as_dyn_error` not found for this struct
+   | doesn't satisfy `NotError: AsDynError`
+   | doesn't satisfy `NotError: std::error::Error`
 ...
-9   |     source: NotError,
-    |     ^^^^^^ method cannot be called on `NotError` due to unsatisfied trait bounds
-    |
-    = note: the following trait bounds were not satisfied:
-            `NotError: std::error::Error`
-            which is required by `NotError: AsDynError`
+9  |     source: NotError,
+   |     ^^^^^^ method cannot be called on `NotError` due to unsatisfied trait bounds
+   |
+   = note: the following trait bounds were not satisfied:
+           `NotError: std::error::Error`
+           which is required by `NotError: AsDynError`
 note: the following trait must be implemented
-   --> $RUST/std/src/error.rs
-    |
-    | pub trait Error: Debug + Display {
-    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  --> $RUST/core/src/error.rs
+   |
+   | pub trait Error: Debug + Display {
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^